EP 4167402 A1 20230419 - WAVELENGTH-CONTROLLED BEAM STABILIZER FOR SPECTRALLY BEAM COMBINED LASER SOURCES
Title (en)
WAVELENGTH-CONTROLLED BEAM STABILIZER FOR SPECTRALLY BEAM COMBINED LASER SOURCES
Title (de)
WELLENLÄNGENGESTEUERTER STRAHLSTABILISATOR FÜR SPEKTRAL STRAHLKOMBINIERTE LASERQUELLEN
Title (fr)
STABILISATEUR DE FAISCEAU COMMANDÉ EN LONGUEUR D'ONDE POUR SOURCES LASER COMBINÉES À FAISCEAU SPECTRAL
Publication
Application
Priority
- US 201816216349 A 20181211
- EP 19912188 A 20191122
- US 2019062827 W 20191122
Abstract (en)
A fiber amplifier system including a plurality of seed beam sources each generating a seed beam at a different wavelength and a plurality of fiber amplifiers that amplify the seed beams. The system also includes a spectral beam combining (SBC) grating that spatially combines the amplified beams and directs them in the same direction as an output beam, and a first fiber sampler and a second fiber sampler that generate a first fiber sample beam having a first intensity and a second fiber sample beam having a second intensity. The system further includes a configuration of optical and electrical feedback components that determine a difference between the first intensity and the second intensity and use the difference to control the wavelength of all of the seed beams so that all of the amplified beams are spatially aligned and propagating in the same direction in the output beam.
IPC 8 full level
G02B 27/10 (2006.01); H01S 3/13 (2006.01); G02F 1/39 (2006.01); H01S 3/00 (2006.01); H01S 3/131 (2006.01); H01S 3/23 (2006.01); H01S 3/067 (2006.01); H01S 5/40 (2006.01)
CPC (source: EP KR US)
G02B 6/28 (2013.01 - KR US); G02B 6/4215 (2013.01 - KR US); G02B 27/1006 (2013.01 - EP KR US); G02F 1/395 (2013.01 - EP KR US); H01S 3/0014 (2013.01 - EP KR); H01S 3/0071 (2013.01 - KR); H01S 3/06754 (2013.01 - KR); H01S 3/06783 (2013.01 - US); H01S 3/1003 (2013.01 - KR US); H01S 3/1301 (2013.01 - KR US); H01S 3/1305 (2013.01 - EP KR); H01S 3/131 (2013.01 - EP KR); H01S 3/2375 (2013.01 - KR); H01S 3/2391 (2013.01 - EP KR); H01S 5/4012 (2013.01 - KR); H01S 5/4087 (2013.01 - KR); H01S 3/0071 (2013.01 - EP); H01S 3/06754 (2013.01 - EP); H01S 3/2375 (2013.01 - EP); H01S 5/4012 (2013.01 - EP); H01S 5/4087 (2013.01 - EP)
Citation (search report)
- [A] CN 104901149 A 20150909 - SHANGHAI INST OPTICS & FINE ME
- [A] US 8630323 B2 20140114 - HONEA ERIC C [US], et al
- [A] US 2017304942 A1 20171026 - OGATA MINORU [JP]
- [A] US 7199924 B1 20070403 - BROWN ANDREW J W [US], et al
- [A] US 4847479 A 19890711 - CLARK GEORGE L [US], et al
- [A] LOFTUS T H ET AL: "522 W AVERAGE POWER, SPECTRALLY BEAM-COMBINED FIBER LASER WITH NEAR-DIFFRACTION-LIMITED BEAM QUALITY", OPTICS LETTERS, OPTICAL SOCIETY OF AMERICA, US, vol. 32, no. 4, 15 February 2007 (2007-02-15), pages 349 - 351, XP001504467, ISSN: 0146-9592, DOI: 10.1364/OL.32.000349
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 11294193 B2 20220405; US 2020183175 A1 20200611; EP 3895263 A2 20211020; EP 3895263 B1 20230412; EP 4167402 A1 20230419; EP 4167402 B1 20240117; JP 2022512390 A 20220203; JP 7438218 B2 20240226; KR 20210099035 A 20210811; WO 2020171865 A2 20200827; WO 2020171865 A3 20201217
DOCDB simple family (application)
US 201816216349 A 20181211; EP 19912188 A 20191122; EP 22212244 A 20191122; JP 2021533496 A 20191122; KR 20217019687 A 20191122; US 2019062827 W 20191122